IPC Subgroup
B21L 11/12 Forming bead chains
Introduced: September 1968
Last revised: January 2006
Full Title
Making chains or chain links of special shape > Forming bead chains
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- MAKING METAL CHAINS